US2660155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generating tubular water wall
Assignee: Combustion Engineering Inc
•
Filing: 1949-01-12
•
Granted: 1953-11-24
•
Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Chapman Edward Corbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:57
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/101; F22B37/102; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1540270A
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US1702058A
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US1980561A
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US2000906A
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GB394233A
Cited
AT145430B
Cited
US2327750A
Cited
US2354222A
Cited
CH240189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |